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mac80211: check if atf has been disabled in __ieee80211_schedule_txq

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commit c13cf5c159660451c8fbdc37efb998b198e1d305 upstream.

Check if atf has been disabled in __ieee80211_schedule_txq() in order to
avoid a given sta is always put to the beginning of the active_txqs list
and never moved to the end since deficit is not decremented in
ieee80211_sta_register_airtime()

Fixes: b4809e9484 ("mac80211: Add airtime accounting and scheduling to TXQs")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://lore.kernel.org/r/93889406c50f1416214c079ca0b8c9faecc5143e.1608975195.git.lorenzo@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lorenzo Bianconi 2020-12-26 10:39:08 +01:00 committed by Greg Kroah-Hartman
parent a00432fa4c
commit 6423b21937
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/tx.c
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@ -3836,7 +3836,7 @@ void __ieee80211_schedule_txq(struct ieee80211_hw *hw,
* get immediately moved to the back of the list on the next
* call to ieee80211_next_txq().
*/
if (txqi->txq.sta &&
if (txqi->txq.sta && local->airtime_flags &&
wiphy_ext_feature_isset(local->hw.wiphy,
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
list_add(&txqi->schedule_order,